122620651613 has 16 divisors (see below), whose sum is σ = 125516079360. Its totient is φ = 119760076800.

The previous prime is 122620651591. The next prime is 122620651631. The reversal of 122620651613 is 316156026221.

It is a cyclic number.

It is not a de Polignac number, because 122620651613 - 2¹⁴ = 122620635229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122620651213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27362333 + ... + 27366813.

It is an arithmetic number, because the mean of its divisors is an integer number (7844754960).

Almost surely, 2^122620651613 is an apocalyptic number.

It is an amenable number.

122620651613 is a deficient number, since it is larger than the sum of its proper divisors (2895427747).

122620651613 is an equidigital number, since it uses as much as digits as its factorization.

122620651613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8228.

The product of its (nonzero) digits is 25920, while the sum is 35.

Adding to 122620651613 its reverse (316156026221), we get a palindrome (438776677834).

The spelling of 122620651613 in words is "one hundred twenty-two billion, six hundred twenty million, six hundred fifty-one thousand, six hundred thirteen".